query: SELECT DISTINCT T1.course_name FROM Courses AS T1 JOIN Student_Enrolment_Courses AS T2 ON T1.course_id  =  T2.course_id
question: What-what being a name all course has some student a-enrolled?
query_toks: SELECT DISTINCT T1.course_name FROM Courses AS T1 JOIN Student_Enrolment_Courses AS T2 ON T1.course_id = T2.course_id
query_toks_no_value: select distinct t1 . course_name from courses as t1 join student_enrolment_courses as t2 on t1 . course_id = t2 . course_id
question_toks: What-what being a name all course has some student a-enrolled?